Xiao Li gave more than half of her stamps to her classmates, so there are still 28 stamps left. How many
(28 + 10) / (1-1 / 2) = 76 (sheets)
Xiao Li bought a total of 26 stamps, which cost 16 yuan and 80 yuan. How many stamps did she buy each?
20 of 6
Six at 8
Xiaoli has 3.5 times as many stamps as Xiaoqiang. If Xiaoli gives Xiaoqiang 25 stamps, they will have the same number. How many stamps did Xiaoli have?
Set X for Xiaoqiang and 3.5x for Xiaoli
3.5X-X=25+25
2.5X=50
X=50/2.5
X=20
Xiaoli = 20 * 3.5 = 70 sheets